I'm referring only to the pressure ring; about 1/16th inch in front of the extractor groove at the case head. And only the place around it where the case pressure ring has expanded the most. No other part of the case was considered in my query. My original post has been so edited.

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US Navy Distinguished Marksman Badge 153
Former US Navy & Palma Rifle Team Member
NRA High Power Master & Long Range High Master
NRA Smallbore Prone Master